Respostas

2014-05-22T15:29:20-03:00
A(3,1) B(-2,0) 

(y-y0)/(x-x0)=(y1-y0)/(x1-x0) 
(y-1)/(x-3)=(1-0)/(3+2)=1/5 
5y-5=x-3 

5y-x-2=0 (B)